The LT5546 is a 40MHz to 500MHz monolithic integrated quadrature demodulator with variable gain amplifier (VGA) and 17MHz I/Q baseband bandwidth designed...
LT5546 on Analog.com
For us the desired IF signal frequency is 402.65 MHz, So twice the value gives us 805.3 MHz. But i failed to find crystal of 805.3 MHz. How to go about it? Kindly help.
Use PLL/Synthesizer for LO drive.